LU-18626 mdd: allow chgrp with read-only permissions

LU-18626 mdd: allow chgrp with read-only permissions

In patch LU-11303, chgrp was modified to be asynchronous
and updates the quotas. However, this resulted in chgrp
calls failing for file owners with read-only permissions.

This commit relaxes the permission requirements for quota updates
for chgrp calls to allow read-only permissions.

Fixes: 83f5544d8518 ("LU-11303 quota: enforce block quota for chgrp")
Test-Parameters: testlist=pjdfstest
Signed-off-by: Max Wang <wamax@amazon.com>
Change-Id: I6c4b73d1d48cb2ffc4866ab2e03a86a6c723e960
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57717
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>